be_aas_move.c

quakeIII源码这个不用我多说吧

/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.

This file is part of Quake III Arena source code.

Quake III Arena source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.

Quake III Arena source code is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Foobar; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/

/*****************************************************************************
 * name:		be_aas_move.c
 *
 * desc:		AAS
 *
 * $Archive: /MissionPack/code/botlib/be_aas_move.c $
 *
 *****************************************************************************/

#include "../game/q_shared.h"
#include "l_memory.h"
#include "l_script.h"
#include "l_precomp.h"
#include "l_struct.h"
#include "l_libvar.h"
#include "aasfile.h"
#include "../game/botlib.h"
#include "../game/be_aas.h"
#include "be_aas_funcs.h"
#include "be_aas_def.h"

extern botlib_import_t botimport;

aas_settings_t aassettings;

//#define AAS_MOVE_DEBUG

//===========================================================================
//
// Parameter:			-
// Returns:				-
// Changes Globals:		-
//===========================================================================
int AAS_DropToFloor(vec3_t origin, vec3_t mins, vec3_t maxs)
{
	vec3_t end;
	bsp_trace_t trace;

	VectorCopy(origin, end);
	end[2] -= 100;
	trace = AAS_Trace(origin, mins, maxs, end, 0, CONTENTS_SOLID);
	if (trace.startsolid) return qfalse;
	VectorCopy(trace.endpos, origin);
	return qtrue;
} //end of the function AAS_DropToFloor
//===========================================================================
//
// Parameter:			-
// Returns:				-
// Changes Globals:		-
//===========================================================================
void AAS_InitSettings(void)
{
	aassettings.phys_gravitydirection[0]	= 0;
	aassettings.phys_gravitydirection[1]	= 0;
	aassettings.phys_gravitydirection[2]	= -1;
	aassettings.phys_friction				= LibVarValue("phys_friction", "6");
	aassettings.phys_stopspeed				= LibVarValue("phys_stopspeed", "100");
	aassettings.phys_gravity				= LibVarValue("phys_gravity", "800");
	aassettings.phys_waterfriction			= LibVarValue("phys_waterfriction", "1");
	aassettings.phys_watergravity			= LibVarValue("phys_watergravity", "400");
	aassettings.phys_maxvelocity			= LibVarValue("phys_maxvelocity", "320");
	aassettings.phys_maxwalkvelocity		= LibVarValue("phys_maxwalkvelocity", "320");
	aassettings.phys_maxcrouchvelocity		= LibVarValue("phys_maxcrouchvelocity", "100");
	aassettings.phys_maxswimvelocity		= LibVarValue("phys_maxswimvelocity", "150");
	aassettings.phys_walkaccelerate			= LibVarValue("phys_walkaccelerate", "10");
	aassettings.phys_airaccelerate			= LibVarValue("phys_airaccelerate", "1");
	aassettings.phys_swimaccelerate			= LibVarValue("phys_swimaccelerate", "4");
	aassettings.phys_maxstep				= LibVarValue("phys_maxstep", "19");
	aassettings.phys_maxsteepness			= LibVarValue("phys_maxsteepness", "0.7");
	aassettings.phys_maxwaterjump			= LibVarValue("phys_maxwaterjump", "18");
	aassettings.phys_maxbarrier				= LibVarValue("phys_maxbarrier", "33");
	aassettings.phys_jumpvel				= LibVarValue("phys_jumpvel", "270");
	aassettings.phys_falldelta5				= LibVarValue("phys_falldelta5", "40");
	aassettings.phys_falldelta10			= LibVarValue("phys_falldelta10", "60");
	aassettings.rs_waterjump				= LibVarValue("rs_waterjump", "400");
	aassettings.rs_teleport					= LibVarValue("rs_teleport", "50");
	aassettings.rs_barrierjump				= LibVarValue("rs_barrierjump", "100");
	aassettings.rs_startcrouch				= LibVarValue("rs_startcrouch", "300");
	aassettings.rs_startgrapple				= LibVarValue("rs_startgrapple", "500");
	aassettings.rs_startwalkoffledge		= LibVarValue("rs_startwalkoffledge", "70");
	aassettings.rs_startjump				= LibVarValue("rs_startjump", "300");
	aassettings.rs_rocketjump				= LibVarValue("rs_rocketjump", "500");
	aassettings.rs_bfgjump					= LibVarValue("rs_bfgjump", "500");
	aassettings.rs_jumppad					= LibVarValue("rs_jumppad", "250");
	aassettings.rs_aircontrolledjumppad		= LibVarValue("rs_aircontrolledjumppad", "300");
	aassettings.rs_funcbob					= LibVarValue("rs_funcbob", "300");
	aassettings.rs_startelevator			= LibVarValue("rs_startelevator", "50");
	aassettings.rs_falldamage5				= LibVarValue("rs_falldamage5", "300");
	aassettings.rs_falldamage10				= LibVarValue("rs_falldamage10", "500");
	aassettings.rs_maxfallheight			= LibVarValue("rs_maxfallheight", "0");
	aassettings.rs_maxjumpfallheight		= LibVarValue("rs_maxjumpfallheight", "450");
} //end of the function AAS_InitSettings
//===========================================================================
// returns qtrue if the bot is against a ladder
//
// Parameter:			-
// Returns:				-
// Changes Globals:		-
//===========================================================================
int AAS_AgainstLadder(vec3_t origin)
{
	int areanum, i, facenum, side;
	vec3_t org;
	aas_plane_t *plane;
	aas_face_t *face;
	aas_area_t *area;

	VectorCopy(origin, org);
	areanum = AAS_PointAreaNum(org);
	if (!areanum)
	{
		org[0] += 1;
		areanum = AAS_PointAreaNum(org);
		if (!areanum)
		{
			org[1] += 1;
			areanum = AAS_PointAreaNum(org);
			if (!areanum)
			{
				org[0] -= 2;
				areanum = AAS_PointAreaNum(org);
				if (!areanum)
				{
					org[1] -= 2;
					areanum = AAS_PointAreaNum(org);
				} //end if
			} //end if
		} //end if
	} //end if
	//if in solid... wrrr shouldn't happen
	if (!areanum) return qfalse;
	//if not in a ladder area
	if (!(aasworld.areasettings[areanum].areaflags & AREA_LADDER)) return qfalse;
	//if a crouch only area
	if (!(aasworld.areasettings[areanum].presencetype & PRESENCE_NORMAL)) return qfalse;
	//
	area = &aasworld.areas[areanum];
	for (i = 0; i < area->numfaces; i++)
	{
		facenum = aasworld.faceindex[area->firstface + i];
		side = facenum < 0;
		face = &aasworld.faces[abs(facenum)];
		//if the face isn't a ladder face
		if (!(face->faceflags & FACE_LADDER)) continue;
		//get the plane the face is in
		plane = &aasworld.planes[face->planenum ^ side];
		//if the origin is pretty close to the plane
		if (abs(DotProduct(plane->normal, origin) - plane->dist) < 3)
		{
			if (AAS_PointInsideFace(abs(facenum), origin, 0.1f)) return qtrue;
		} //end if
	} //end for
	return qfalse;
} //end of the function AAS_AgainstLadder
//===========================================================================
// returns qtrue if the bot is on the ground
//
// Parameter:			-
// Returns:				-
// Changes Globals:		-
//===========================================================================
int AAS_OnGround(vec3_t origin, int presencetype, int passent)
{
	aas_trace_t trace;
	vec3_t end, up = {0, 0, 1};
	aas_plane_t *plane;

	VectorCopy(origin, end);
	end[2] -= 10;

	trace = AAS_TraceClientBBox(origin, end, presencetype, passent);

	//if in solid
	if (trace.startsolid) return qfalse;
	//if nothing hit at all
	if (trace.fraction >= 1.0) return qfalse;
	//if too far from the hit plane
	if (origin[2] - trace.endpos[2] > 10) return qfalse;
	//check if the plane isn't too steep
	plane = AAS_PlaneFromNum(trace.planenum);
	if (DotProduct(plane->normal, up) < aassettings.phys_maxsteepness) return qfalse;
	//the bot is on the ground
	return qtrue;
} //end of the function AAS_OnGround
//===========================================================================
// returns qtrue if a bot at the given position is swimming
//
// Parameter:				-
// Returns:					-
// Changes Globals:		-
//===========================================================================
int AAS_Swimming(vec3_t origin)
{
	vec3_t testorg;

	VectorCopy(origin, testorg);
	testorg[2] -= 2;
	if (AAS_PointContents(testorg) & (CONTENTS_LAVA|CONTENTS_SLIME|CONTENTS_WATER)) return qtrue;
	return qfalse;
} //end of the function AAS_Swimming
//===========================================================================
//
// Parameter:			-
// Returns:				-
// Changes Globals:		-
//===========================================================================
static vec3_t VEC_UP			= {0, -1,  0};
static vec3_t MOVEDIR_UP		= {0,  0,  1};
static vec3_t VEC_DOWN		= {0, -2,  0};
static vec3_t MOVEDIR_DOWN	= {0,  0, -1};

void AAS_SetMovedir(vec3_t angles, vec3_t movedir)
{
	if (VectorCompare(angles, VEC_UP))
	{
		VectorCopy(MOVEDIR_UP, movedir);
	} //end if
	else if (VectorCompare(angles, VEC_DOWN))
	{
		VectorCopy(MOVEDIR_DOWN, movedir);
	} //end else if
	else
	{
		AngleVectors(angles, movedir, NULL, NULL);
	} //end else
} //end of the function AAS_SetMovedir
//===========================================================================
//
// Parameter:				-
// Returns:					-
// Changes Globals:		-
//===========================================================================
void AAS_JumpReachRunStart(aas_reachability_t *reach, vec3_t runstart)
{
	vec3_t hordir, start, cmdmove;
	aas_clientmove_t move;

	//
	hordir[0] = reach->start[0] - reach->end[0];
	hordir[1] = reach->start[1] - reach->end[1];
	hordir[2] = 0;
	VectorNormalize(hordir);
	//start point
	VectorCopy(reach->start, start);
	start[2] += 1;
	//get command movement
	VectorScale(hordir, 400, cmdmove);
	//
	AAS_PredictClientMovement(&move, -1, start, PRESENCE_NORMAL, qtrue,
								vec3_origin, cmdmove, 1, 2, 0.1f,
								SE_ENTERWATER|SE_ENTERSLIME|SE_ENTERLAVA|
								SE_HITGROUNDDAMAGE|SE_GAP, 0, qfalse);
	VectorCopy(move.endpos, runstart);
	//don't enter slime or lava and don't fall from too high
	if (move.stopevent & (SE_ENTERSLIME|SE_ENTERLAVA|SE_HITGROUNDDAMAGE))
	{
		VectorCopy(start, runstart);
	} //end if
} //end of the function AAS_JumpReachRunStart
//===========================================================================
// returns the Z velocity when rocket jumping at the origin
//
// Parameter:			-
// Returns:				-
// Changes Globals:		-
//===========================================================================
float AAS_WeaponJumpZVelocity(vec3_t origin, float radiusdamage)
{
	vec3_t kvel, v, start, end, forward, right, viewangles, dir;
	float	mass, knockback, points;
	vec3_t rocketoffset = {8, 8, -8};
	vec3_t botmins = {-16, -16, -24};
	vec3_t botmaxs = {16, 16, 32};
	bsp_trace_t bsptrace;

	//look down (90 degrees)
	viewangles[PITCH] = 90;
	viewangles[YAW] = 0;
	viewangles[ROLL] = 0;
	//get the start point shooting from
	VectorCopy(origin, start);
	start[2] += 8; //view offset Z
	AngleVectors(viewangles, forward, right, NULL);
	start[0] += forward[0] * rocketoffset[0] + right[0] * rocketoffset[1];
	start[1] += forward[1] * rocketoffset[0] + right[1] * rocketoffset[1];
	start[2] += forward[2] * rocketoffset[0] + right[2] * rocketoffset[1] + rocketoffset[2];
	//end point of the trace
	VectorMA(start, 500, forward, end);
	//trace a line to get the impact point
	bsptrace = AAS_Trace(start, NULL, NULL, end, 1, CONTENTS_SOLID);
	//calculate the damage the bot will get from the rocket impact
	VectorAdd(botmins, botmaxs, v);
	VectorMA(origin, 0.5, v, v);
	VectorSubtract(bsptrace.endpos, v, v);
	//
	points = radiusdamage - 0.5 * VectorLength(v);
	if (points < 0) points = 0;
	//the owner of the rocket gets half the damage
	points *= 0.5;
	//mass of the bot (p_client.c: PutClientInServer)
	mass = 200;
	//knockback is the same as the damage points
	knockback = points;
	//direction of the damage (from trace.endpos to bot origin)
	VectorSubtract(origin, bsptrace.endpos, dir);
	VectorNormalize(dir);
	//damage velocity
	VectorScale(dir, 1600.0 * (float)knockback / mass, kvel);	//the rocket jump hack...
	//rocket impact velocity + jump velocity
	return kvel[2] + aassettings.phys_jumpvel;
} //end of the function AAS_WeaponJumpZVelocity
//===========================================================================
//
// Parameter:			-
// Returns:				-
// Changes Globals:		-
//===========================================================================
float AAS_RocketJumpZVelocity(vec3_t origin)
{
	//rocket radius damage is 120 (p_weapon.c: Weapon_RocketLauncher_Fire)
	return AAS_WeaponJumpZVelocity(origin, 120);
} //end of the function AAS_RocketJumpZVelocity
//===========================================================================
//
// Parameter:			-
// Returns:				-
// Changes Globals:		-
//===========================================================================
float AAS_BFGJumpZVelocity(vec3_t origin)
{
	//bfg radius damage is 1000 (p_weapon.c: weapon_bfg_fire)
	return AAS_WeaponJumpZVelocity(origin, 120);
} //end of the function AAS_BFGJumpZVelocity
//===========================================================================
// applies ground friction to the given velocity
//
// Parameter:			-
// Returns:				-
// Changes Globals:		-
//===========================================================================
void AAS_Accelerate(vec3_t velocity, float frametime, vec3_t wishdir, float wishspeed, float accel)
{
	// q2 style
	int			i;
	float		addspeed, accelspeed, currentspeed;